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Gölcük, Turkey
Full City Profile
56,189
Population
703/sq mi density
184 ft
Elevation
56 meters
56°F
Avg Temperature
13°C
Gölcük enjoys a temperate climate with an average annual temperature of 56°F (13°C). Winters average 41°F in January while summers reach 72°F in July. The area gets 284 sunny days per year. Annual precipitation totals 28.6 inches. The area receives 0.0 inches of snow annually.
Temperature
41°F Jan (5°C)
72°F Jul (22°C)
| Annual Average | 56.0°F |
| 4% above US avg | |
| January Average | 41°F (5°C) |
| July Average | 72°F (22°C) |
| Sunny Days | 284 days/yr |
Geography
| Elevation | 184 ft (56 m) |
| Area | 79.9 sq mi (207.0 km²) |
| Population Density | 703/sq mi |
| Coordinates | 40.7150°N, 29.8182°W |
| Timezone | Europe/Istanbul |
Precipitation & Snow
Air Quality
Tsunami History
9 tsunamis recorded within 500 km. Highest wave on record: 6.0 m (20 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1509 | MARMARA SEA | Earthquake | 6.0 m | 5,000 | 145 km |
| 1894 | MARMARA SEA | Earthquake | 4.5 m | 1,349 | 95 km |
| 1999 | KOCAELI, TURKEY | Earthquake | 2.5 m | 17,118 | 14 km |
| 1963 | MARMARA SEA | Earthquake | 1.0 m | 1 | 56 km |
| 2025 | MARMARA SEA | Earthquake | 0.1 m | — | 142 km |
| 1343 | MARMARA SEA, STRAIT OF BOSPORUS | Earthquake | — | — | 128 km |
| 986 | MARMARA SEA | Earthquake | — | — | 53 km |
| 551 | LEVANTIAN SEA | Earthquake | — | — | 12 km |
| 478 | MARMARA SEA | Earthquake | — | — | 53 km |
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 41°F (5°C) | 3.4 in | Coldest |
| February | 42°F (5°C) | 2.6 in | |
| March | 45°F (7°C) | 2.5 in | |
| April | 53°F (12°C) | 2.0 in | |
| May | 61°F (16°C) | 1.9 in | |
| June | 68°F (20°C) | 1.6 in | |
| July | 72°F (22°C) | 1.2 in | Driest |
| August | 72°F (22°C) | 1.4 in | Warmest |
| September | 66°F (19°C) | 1.9 in | |
| October | 59°F (15°C) | 3.1 in | |
| November | 51°F (11°C) | 3.1 in | |
| December | 45°F (7°C) | 4.0 in | Wettest |
Gölcük has a seasonal temperature swing of 31°F / from 41°F in January to 72°F in August. Total annual precipitation is 28.6 inches, with December being the wettest month (4.0") and July the driest (1.2").